When the pressure vessel is under water pressure test, the pressure gauge will be good on top or below
The above, because the test pressure is the pressure at the top of the container The pressure at the bottom of the container is more static than the top
According to "pressure vessel safety technology and supervision code" article 96 before the pressure test, pressure container, the connection parts of the bolt must complete assembly, fastening is in order. Test pressure gauges shall comply with the relevant provisions of chapter 7, with at least two same range and the calibration of pressure gauge, and should be installed at the top for observation of location be tested to the container. The pressure gauge hits the top and below the pressure must not be the same, the below close above the above close up a fluid column static pressure!
The answer is: absolutely not the same!! Because there is a density p in all the media, and the pressure vessel has a position up and down, and there is a height difference in the upper and lower position, which is given by the density formula So the two readings are inconsistent, but the pressure is greater and the height difference is negligible
When pressure vessels are tested for water pressure, the pressure gauge is placed on top of the pressure gauge. If it is internal pressure, the pressure gauge is under the container. Because, all medium density p, and the location of the pressure vessel is up and down, up and down position exists difference in height h, according to the density formula G = p * * G h so two readings indicate values are not consistent, but the pressure is bigger, and smaller height difference can ignore this part of the pressure value.
